ICE HARDENED™ THE TORCH™ Metal Cutting Blades feature a tooth form optimized for the longest life and maximum durability. TOUGH NECK™ is engineered to protect against tang breakage and delivers the strongest SAWZALL® blade tang on the market. GRID IRON™ features a stamped honeycomb pattern throughout the body of the blade that greatly increases the rigidity of the blade, making it the stiffest metal-cutting SAWZALL® blade on the market. ICE HARDENED™ blades are cryogenically treated for up to 50% longer life. These blades are ideal for making tough, straight cuts.